Spiroannulation
[化] 螺增环
🗣️ 情景例句
We cannot leave this problem unattended.
这一问题我们不能置之不理。
What did Mathew think of my dance?
不知道马休对我的舞技做何想法？
None of us is afraid of difficulties.
我们当中没有一个人害怕困难。